Inseam-trimming machine.



W. B. KEIGHLEY.

INSBAM TRIMMING MACHINE.

APPLICATION FILED FEB.1,1909.

960,952. 1 Patented June 7, 1910.

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INSEAM TRIMMING MACHINE.

APPLICATION FILED PEB.1,1909.

Patented June '7, 1910.

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WILLIAM B. KEIGHLEY, 0F VINELAND, NEW JERSEY.

INSEAM-TRIMMING MACHINE.

Specification of Letters Patent. Application filed. February 1, 1909.

Patented June 7, 1910. Serial No. 475,425.

To all whom it may concern:

Be it known that I, WILLIAM B. KEIGHLEY, a citizen of the United States,residing in Vineland, New Jersey, have invented certain Improvements inInseam-Trimming Machines, of which the following is a specification.

My invention relates more particularly to certain improvements in thattype of shoe trimming machinery in which an endless or band knife isemployed, such for example as that illustrated in my application forPatent No. 424,184, filed March 30, 1908, and one object of saidinvention is to provide means acting in conjunction with the knifewhereby it will be possible to more quickly trim a shoe than hashitherto been possible.

It is further desired to provide a band knife trimming machine with anovel form of guide for the shoe whereby it shall be possible to sosupport this latter that the surplus stock may be trimmed simultaneouslyfrom both sides thereof.

I also desire to provide means whereby in a machine of the type abovenoted the knife shall be prevented from injuring the shoe operated on byreason of its getting beyond the gontrol of the operator or cutting toodee I h se objects and other advantageous ends I secure as hereinafterset forth, reference being had to the accompanying drawings, in which:

Figure 1 is a perspective view of a portion of a band knife trimmingmachine illustrating my invention as applied thereto; Fig. 2, is atransverse vertical section of the apparatus shown in Fig. 1; Fig. 3, isa vertical section of a modified form of my invention; Fig. 4, is a planof the device shown in Fig. 3; Fi 5, is a front elevation, partly insection, of another modification; Fig. 6, is a side elevation of part ofthe device shown in Fig. 5; Fig. 7, is an enlarged fragmentary elevationof one of the guides used in the machine shown in Fig. 5, and Fig. 8, isa front elevation of another modification of my invention.

As understood by those skilled in the art, it is necessary at a certainstage in the manufacture of shoes to remove the surplus stock formed bythe projecting. edges of the upper, the lining and the welt, as will beseen in Fig. 1, and while the cutting off of this materlal 'may beaccomplished much morequickly than hitherto by the use of the machinedescribed and claimed in my above mentioned application for patent, Ihave found it is possible, by the use of the devices illustrated in theabove drawings, to still further reduce the time of operation by reasonof the fact that the two sides of the shoe are simultaneously operatedon. In order to render this possible it is obvious that the shoe must besupported or guided at two or more points in order to obviate thepossibility of the knife cutting too deeply and so doing serious injury.

In illustrating my invention I have not shown the supporting frame orthe driving pulleys of the band knife, since it is obvious that thesemay be of practically the same construction as commonly employed in woodsawing machines either of the horizontal or vertical type, or ifdesired, may be arranged as illustrated in the above noted applicationfor patent.

In Figs. 1 and 2 of the drawings A represents the band knife which ispreferably beveled at its cutting edge and may or may not be providedwith saw teeth as desired. Carried on and extending between two parts ofthe frame of the machine, a portion of which is indicated at C is a thinblade or plate H usually of steel, and the operating run of the knife Apasses over and preferably in engagement with this so that its cuttingedge projects beyond said plate. The back edge h of the plate ispreferably turned up to a height equal to or less than the thickness ofthe knife so as to prevent this moving to the rear under operatingconditions. Cover plates 71, mounted on the parts G extend toward eachother over the knife so as to prevent accidental contact therewith aswell as to hold said knife down on the plate H. If desired, the middleof this plate H may be provided on its under surface with two downwardlyextending projections or lugs 72, designed to rest upon the surface ofthe shoe sole and thereby to some extent regulate the possible depth towhich the knife may out. These projeotions, however, may beomittedwithout departing from my invention, since in most cases theplate H is amply sufiicient to attain the end desired. Under operatingcon ditions the shoe to be trimmed is approached to the band knife withits sole uppermost and the projecting stock adjacent to its heel isbrought into engagement with the cutting edge of said knife. It is thenmoved in a line at right angles to the line of the knife which thussimultaneously engages and severs the projecting material at both edgesof the shoe, the depth of the out being regulated by the plate H and bythe amount of inclination given to the shoe as it is moved under theknife.

In that form of my invention shown in Figs. 3 and is, I have provided awork supporting post B whose gcnewil construction described and claimedin Patent No. 928,133, July 13, 1909, and which will be seen from. thedrawings to consist of a wedge-shaped structure having one of its facesimmediately adjacent to and parallel with the knife A. Said structure isformed of two similar parts 6 held together by bolts 6" and grooved forthe reception of a bar I) which is thereby clamped between them. Saidbar 7) is mounted so as to be substantially parallel with the other faceof the post B thus extending at an angle to the line of the band knifeand into engagement therewith, its end being beveled for this purpose,as shown. It is held in any adjusted position by the above mentionedclamping bolts. A shield or guard b fastened to the post B extendsaround the under side of the knife so as to completely inclose the sameand carries near the pointed end of said post a spring plate 7) The bar7) projects beyond the end of the post B, and the spring plate is soformed and placed as to press against the band knife imn'iediatelyopposite the end of the said post. This plate preferably consists of aslightly curved piece of spring metal designed to be confined betweenthe knife and the guard 71 so that its ends bear upon the knife and oneof said ends has a turned up portion 0 which ex tends through a slot insaid guard so as to retain said plate in place. On a second portion G ofthe main frame of the machine is another work supporting post Dpractically identical in construction with the post B and so mountedupon said part C as to be movable toward and from this first post. Itswedge shaped end projects toward the similarly formed end of said post Band like this latter, it is provided with a bar (Z having a beveled endin engagement with one side of the band knife, a spring plate clengaging the knife immediately opposite the beveled end of said bar, anda guard d. Under operating conditions the band knife is driven so thatit passes from the post D toward the post B as indicated by the arrow,and as a consequence the post D tends to move toward the post B becauseof the friction between the knife and the members (Z and (Z. Thistendency is counteracted to any desired extent by means of a weight Econnected through a cord or chain c with the post D, so that underworking conditions it is reduced to a relatively small amount. In usingthis form of my invention each bar I) or (Z with its cooperating springplate I) or d as the case may be, is made to engage the slightdepressions on the sides of the shoes in which lie the stitches holdingthe welt, upper, etc. to the sole, and an operator quickly becomesskilled in causing said guiding points to remain in or follow thedirection given by these slight depression as the shoe is moved, underthe saw. Since the post D is free to move both toward and from the postB, it is obvious that as a shoe is moved through the machine bothsupporting posts are automatically maintained in engagement with it; thepost D moving away from the post B and then toward the same toaccommodate the varying width. The project-ing edges of stock are thuscleanly removed by the shearing action of the knife, which, it will beunderstood, is constantly maintained in an exceedingly sharp conditionby suitable automatic grinding mechanism not forming any part of thisinvention. If desired, both of the supporting posts may be so arrangedas to be movable toward and from the shoe, and they may, if desired,have the construction illustrated in Fig. 8, where as before A indicatesthe band knife. Carried mainly by the knife so as to be slidable thereonare two relatively thin elongated plates f, each of which is movablymounted upon a lever F pivoted or fulcrumed to the frame of the machineat Said levers are normally pressed toward each other by springs f. Inthis instance the plates f act in the same manner as the work supportingposts D and B to govern the depth of the cut made by the band knife asthe shoe is being drawn past the same, and also serve as a guiding meanswhereby the shoe may be kept in the proper position relatively to theknife. They likewise at all times remain in engagement with the sides ofthe shoe irrespective of its width and act as guards to preventaccidental injury to the operator from the knife.

In that form of my invention shown in Figs. 5, G and 7, one of the worksupporting posts B is practically identical with that illustrated in myapplication for patent above referred to, though it may, if desired, beconstructed as illustrated in Fig. 1; the operating run of the knife Abeing vertical. The second guiding means for the shoe is formed by aweighted member forming a slider G loosely mounted upon the knife andconsisting preferably of two plates held together by screws and havingthrough them a passage for said knife. From the lower end of this slideran extension 9 projects immediately adjacent to and parallel with therun of the knife so that it is free to engage one side of the shoe,thereby cooperating with the post B to regulate the depth to which saidknife can cut.

As will be noted from the drawings, it is immaterial to my inventionwhether the operating run of the band knife lies in a horizontal orvertical plane, although under ordinary conditions I prefer that itshould be arranged as illustrated in Figs. 1 and 2.

I claim 1. The combination in a trimming machine of a band knife capableof operating simultaneously on opposite sides of the shoe; with shoeguiding means constructed to engage a shoe at a plurality of points; andcapable of limiting the depth of the cut of the knife; said guidingmeans including a relatively thin elongated plate extendingsubstantially parallel with and engaging the knife.

2. The combination in a trimming ma chine of a band'knife capable ofoperating simultaneously on opposite sides of a shoe; and shoe guidingmeans including an elongated plate mounted adjacent to and extendingsubstantially parallel with said knife in position to lie between theknife and the main portion of a shoe being operated on.

8. The combination with a band knife capable of engaging and operatingsimultaneously upon opposite sides of a shoe, of a guiding devicetherefor consisting of a relatively thin elongated plate mounted adjacent to and parallel with said knife so as to lie between the actingportion of the knife and the shoe operated on.

4. The combination of a supporting structure, a band knife mounted tosimultaneously operate on opposite sides of a shoe, and an elongatedplate carried by the structure with its edge adjacent to the rear of thecutting edge of the knife and lying between the acting portion of theknife and the shoe operated on.

5. The combination of a band knife mounted so as to be free tosimultaneously operate on opposite sides of a shoe, two supportingstructures, and a thin elongated plate extending between said structuresadjacent to and parallel with the lmife.

6. The combination of a band knife mounted to simultaneously operate onopposite sides of a shoe, a supporting structure, with an elongatedplate carried thereby parallel with the knife and under the acting partthereof, said plate having a projecting portion at its rear edge tolimit the rearward movement of said knife.

7. The combination of a supporting struc ture, a band lmife, two coversspaced apart and extending adjacent to the knife on one side thereof,with a relatively thin elongated plate mounted on the supportingstructure so as to extend between the covers on the opposite side ofsaid knife.

In testimony whereof, I havesigned my name to this specification, in thepresence of two subscribing witnesses.

WVILLIAM B. KEIGHLEY.

Witnesses:

WILLIAM E. BRADLEY, J 0s. H. KLEIN.

